Maker Select/Wanhao Duplicator Filament Tension Wedge

thingiverse

I built a simple upgrade for these Duplicators/Selects since their stock extruders are pretty much worthless with non-adjustable filament tension. The new device fits snugly on the extruder assembly right under the tension lever, pushing against the steel fan mount. Just insert it and you'll see significantly more consistent extrusion results, especially when printing at high speeds. It's a cheap and straightforward fix.